The AirTAC GFR40015MLF2WK AirTAC Filter Regulator PT1/2, 5 um is a genuine G-series filter regulator: water separation, 5 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT1/2" ports, a manual drain and regulates 0.05 - 0.9 MPa (7 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The AirTAC GFR40015MLF2WK is a size 400 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration carries a 1/2 in PT port, a fine 5 um filter element (the W grade, tighter than the standard 40 um), a manual drain bowl in polycarbonate, a low-pressure regulator type, an embedded square gauge with psi scale, a reverse/check valve, and a mounting bracket. The manual drain means an operator opens the bowl drain to expel collected condensate, which suits installations visited on a regular maintenance round.
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um filtration, gauge scales in MPa, psi or bar, and G (BSPP) or NPT thread options to order. Flow is published as curves rather than a single rating, so we confirm flow and datasheet figures for your application on request.
| Model | GFR40015MLF2WK AirTAC Filter Regulator PT1/2, 5 um |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (PT thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 130 psi) |
| Pressure type | Low-pressure type |
| Adjusting mechanism | Balanced type |
| Fluid | Compressed air |
|---|---|
| Max. working pressure | 1.0 MPa (145 psi) |
| Temperature range | -5 to +70 °C (unfreeze) |
| Drain type | Manual drain |
| Bowl material | PC |
| Pressure gauge | Fitted — square, psi scale |
| Reflux valve | Fitted (reverse flow permitted) |
Specifications follow the official AirTAC G-series air-preparation data. The regulating band is set by the drain type: automatic and differential-pressure drains regulate 0.15 - 0.9 MPa, a manual drain regulates 0.05 - 0.9 MPa. The low-pressure type adjusts over a lower band than standard; we confirm the exact figures from the factory datasheet. Air must not freeze in the unit. Flow curves, weight and outline dimensions are not published in our data set — ask us and we will confirm from the factory datasheet.
| GFR400 | G-series filter regulator, 400 body — sets the port range. |
|---|---|
| 15 | Port size PT1/2". This body offers 10 = PT3/8", 15 = PT1/2". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 130 psi)). |
| L | Low-pressure type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. C is round, F is square. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| (blank) | PT thread. PT is the default; G is BSPP and T is NPT. |
| K | Reverse-flow (reflux) valve fitted. |
Field order is size, port, drain, type, bracket, gauge, shape, scale, grade, thread, reflux — a blank position takes the default. Example: GFR300-08 is a 300 body, PT1/4", differential drain, standard type, bracket included, gauge fitted, 40 µm, PT thread, no reflux valve.
A larger body carries a larger port and holds set pressure better as flow rises. AirTAC publishes flow only as curves, so size the body from your peak demand with headroom. The GFR600 uses an aluminium-alloy bowl; the 200, 300 and 400 bodies use PC.
| This model | GFR400 · PT1/2" · 5 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
Feeds filtered, regulated air to clamp and fixture cylinders on a CNC machining cell, with the 5 um element protecting precision valve spools and the check valve holding clamp pressure if the main supply drops.
Serves as the conditioning point on a cartoning or wrapping line, removing water and fine particles before directional valves and actuators, with the psi gauge giving operators a direct pressure readout at the machine.
Installed at the 1/2 in drop feeding an assembly bench or work cell, regulating the header supply down to the pressure the station needs while the manual drain handles condensate on the maintenance round.
Size 400 with a PT1/2 port is the step to choose when your line flow sits above what the 300 size serves; match the size to the flow curve rather than to pipe size alone. The 5 um element here protects downstream equipment that the standard 40 um grade would leave exposed to finer particles; choose 40 um for general duty and 5 um where finer protection matters. The manual drain requires a scheduled walk-round to bleed condensate; pick automatic or differential-pressure drain where visits are infrequent. The low-pressure regulator type is intended for circuits regulated to lower settings than the standard type; the exact range is not published, so confirm your setpoint with us. The square gauge is fitted with a psi scale (MPa and bar scales are available), the reverse/check valve holds downstream pressure on supply loss, and the bracket is included. PT is the standard thread; G (BSPP) and NPT are order options. Flow is published as curves, not a single rating, so ask us to confirm sizing against your application before ordering.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR series as curves, not as a single rated figure, so we do not quote a number. Send us your application details and we will confirm the flow and full datasheet figures for this size 400, PT1/2 unit on request.
The M in the code selects a manual drain: condensate collected in the polycarbonate bowl is released by opening the drain when an operator services the unit. This suits lines on a regular maintenance schedule. If your installation is unattended for long periods, ask us about the automatic or differential-pressure drain variants of the same GFR400 size.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity, thread type (PT / G / NPT), gauge scale and destination. We confirm price, availability and lead time — usually within 7-8 hours.